Analysis of methodologies for determination of DEM input parameters
| Autor: | Marcos A.S. Barrozo, Rondinelli M. Lima, Claudio Roberto Duarte, Rodolfo J. Brandão, Raphael L. Santos |
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| Rok vydání: | 2021 |
| Předmět: |
Computer science
020209 energy General Chemical Engineering Rolling resistance Flow (psychology) 02 engineering and technology Mechanics Granular material Discrete element method 020401 chemical engineering Coefficient of restitution 0202 electrical engineering electronic engineering information engineering Statistical analysis 0204 chemical engineering |
| Zdroj: | Brazilian Journal of Chemical Engineering. 38:287-296 |
| ISSN: | 1678-4383 0104-6632 |
| Popis: | Predicting the flow behavior of particles is important for the equipment design and optimization of processes and operations involving granular materials. Simulations using the discrete element method (DEM) have been used to gain insights about the granular flow, but the correct use of this technique requires knowledge about the input parameters. However, reliable measurements of these parameters remain a challenge. The purpose of this study was to test and validate experimental methodologies for determining important DEM parameters, including the coefficients of restitution and static and rolling friction, for the particle–particle and particle–wall interactions. The experimental tests were reproduced using DEM simulation to enable the identification of the best procedure for measuring each parameter. The influence of the thickness of the material on which the particles are colliding on the experimental measurement of the coefficient of restitution were quantified. It was also performed a deep statistical analysis of the simulations results using experimental design techniques to identify the significant input parameter in each measurement technique, using loose and grouped particles. |
| Databáze: | OpenAIRE |
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